The Boset , also Gudda called and Bericha , two stratovolcanoes in Ethiopia , due to their geographical proximity under the common name Boset-Bericha are known. They rise from the Ethiopian part of the East African rift . They are composed of rhyolite and trachyte . Obsidian and pumice stones can also be found on Bericha . Remains of an earlier caldera can be found on the northwest flank of the Boset. The boundaries of the caldera were destroyed by later lava flows. There is speculation that the volcano, although the most recent eruptions are believed to have been in the Pleistocene and Holocene , is still active today. Around 4 million people live within a radius of 100 km.
↑ GM Paola: The Ethiopian Rift Valley (between 7 ° 00 ′ and 8 ° 40 ′ Latin north) . In: Bulletin Volcanologique . tape36 , no.4 , December 1972, ISSN 0258-8900 , p.517-560 , doi : 10.1007 / BF02599823 ( springer.com [accessed July 23, 2019]).
↑ Melanie Siegburg, Thomas M. Gernon, Jonathan M. Bull, Derek Keir, Dan N. Barfod: Geological evolution of the Boset-Bericha Volcanic Complex, Main Ethiopian Rift: 40Ar / 39Ar evidence for episodic Pleistocene to Holocene volcanism . In: Journal of Volcanology and Geothermal Research . tape351 , February 2018, p.115-133 , doi : 10.1016 / j.jvolgeores.2017.12.014 ( elsevier.com [accessed July 23, 2019]).
^ Siegburg, Melanie, et al .: Morphometric and magmatic evolution at the Boset-Bericha Volcanic Complex in the Main Ethiopian Rift . In: EGU General Assembly Conference Abstracts . tape19 , 2017.
